# Errata: Dynamics matrix in Example 6.7 has errors in (3,4) and (4,4) entries

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Location: page 188, line -2

The dynamics matrix in Example 6.7 does not match the derivation in Example 2.1 (see page 37). The (3,4) entry is missing a factor of and the factor in the (4,4) entry should be . The correct dynamics matrix is

(Contributed by D. G. MacMynowski, 7 Oct 08)